Capacitive sensor

Abstract

A capacitive sensor for simultaneously sensing radial movement and axial movement of a rotary body. The capacitive sensor includes a sensor housing having a pocket disposed in a radial direction and provided with one side surface opened in an axial direction; a plurality of sensor electrodes inserted into the pocket; and an insulator inserted into the pocket to fill a space between the sensor housing and the sensor electrodes. Each of the sensor electrodes includes a radial sensor plane and an axial sensor plane, and the capacitive sensor further includes a guard formed between the sensor electrodes and the sensor housing.

1 . A capacitive sensor comprising: 
 a sensor housing having a pocket disposed in a radial direction and provided with one side surface opened in an axial direction;    a plurality of sensor electrodes having sensor planes inserted into the pocket; and    an insulator inserted into the pocket to be filled in a space between the sensor housing and the sensor electrodes,    wherein each of the sensor electrodes is formed with an axial sensor plane and a radial sensor plane perpendicular to the axial sensor plane.    
   
   
       2 . The capacitive sensor as set forth in  claim 1 , 
 wherein each of the sensor electrodes includes a radial sensor plane and an axial sensor plane.    
   
   
       3 . (canceled)  
   
   
       4 . The capacitive sensor as set forth in  claim 2 , further comprising a guard formed between the sensor electrodes and the sensor housing.